Articles
STYLAR HETEROMORPHISM IN SOLANUM KHASIANUM CLARKE
Article number
208_22
Pages
209 – 220
Language
Abstract
Solanum khasianum Cl. is an alkaloid (solasodine) yielding plant.
The concentration of alkaloid is maximum in its berries. S. khasianum bears two types of flowers: long-style (berry forming, female fertile); and short-style (non-berry forming, female sterile). Optical and electron microscopic studies reveal structural variation in the stigma of long-style and short-style flowers.
Unlike short-style stigma, the stigma of long-style has 2–3 celled papillae which open outside through an apical pore.
The pollen tubes enter the stigma through the pore of the papillae.
Histochemically, long-styles have more polysaccharides, nucleic acids, particularly RNA, and protein in comparison to short-style.
The ovules in the short-style ovaries abort at an early stage of development and reveal arrested embryosacs.
Compared to short-style flowers, long-style flowers have more protein but less peroxidase activity.
Long-style and short-style flowers have different peroxidase isozyme banding pattern.
Kinetin favours long-style development while GA promotes short-style development.
The concentration of alkaloid is maximum in its berries. S. khasianum bears two types of flowers: long-style (berry forming, female fertile); and short-style (non-berry forming, female sterile). Optical and electron microscopic studies reveal structural variation in the stigma of long-style and short-style flowers.
Unlike short-style stigma, the stigma of long-style has 2–3 celled papillae which open outside through an apical pore.
The pollen tubes enter the stigma through the pore of the papillae.
Histochemically, long-styles have more polysaccharides, nucleic acids, particularly RNA, and protein in comparison to short-style.
The ovules in the short-style ovaries abort at an early stage of development and reveal arrested embryosacs.
Compared to short-style flowers, long-style flowers have more protein but less peroxidase activity.
Long-style and short-style flowers have different peroxidase isozyme banding pattern.
Kinetin favours long-style development while GA promotes short-style development.
Authors
Y.S. Chauhan, N. Joshee
Keywords
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